Is the Age of a Tire Important ?

Youbetcha !...The National Highway Traffic Safety Administration

( NHTSA ) recommends that any tire SIX YEARS OLD or older

should be replaced, regardless of Tire depth. This means that tires

that look almost like new but are 6 years or older  should be replaced

because the NHTSA determined that age, not tread depth, was a

major contributor in tire failures.

Automotive Principles Technology – James D. Halderman

How Old-and Dangerous-Are Your Tires ?

https://www.edmunds.com/car-care/how-old-and-dangerous-are-your-tires.html

How Old Are Your Tires ? Check the Born-On Date

https://www.popularmechanics.com/cars/cars/a4047/how-old-are-your-tires-15441034/